Valve-reseating device.



G. H. &' H. W. BROWN. VALVE RESEATING DEVICE. APPLICATION FILED JAN. 29, 1908.

Patented Feb. 15, 1910.

Mir/eases.

i and HENRY IV.

PATENT OFFICE.

GARRETT HIIBROWN, F SYRACUSE, 4ND HENRY W. BRQWN, 0F ITHACA, NEW YORK.

VALVE-RESEATIN G DEVICE."

.fom it may concern:

,Be it known that we, GARRETT H. BROWN BROWN, of Syracuse and Ithaca, respectively, in the counties of Onondaga. and Tompkins, respectively, in the A State of Xew York, have invented new and useful Improvements 1n Valve Reseating Devices, of which the following, taken in connection with the accompanying drawngs, s a full. clear, and exact descr ption. This ii'ivenuon relates to an lmproved v valve reseating device by which the valve itself may be manipulated under a rotary action/against its seat with polishing or emery flour or an interposed abraslve substance such as pohshers paste for the purpose of establishing a closer fit between the valve and its seat and although it is, particularly useful in reseating the valves of internal combustion engines, it is equally applicablefor regrmding or refitting other valves to their seats.

The main object of our present invention is to provide a simple, practical and eflicient iand-operated device for engaging and r0- tating the valve against its seat in combination with yielding means for intermittingly unseating the valve when the pressure upon the rotating mechanism is released so that the valve may turned to a different position away from its seat and then repressed against its seat and again rotated to avoid grinding or wearing in one particular place so that thevalve will closely fitits seat, when turned to any position.

Another object is to provide means for unseating the valve immediately upon the release of the pressure thereon so that the valve may be turned to different positions when away from its seat and again repressed against the action of the retracting means while the valve is under pressure.

Other objects and uses relating to specific parts of the device will be brought out in the following description.

In the drawings-Figures 1 and 2 are respectively top plan and side elevation of our spring and additional means for rotating the valve engaging tool by hand Specification of Letters Patent. Application filed January 29, 1908.

I I I I I valve stein so Patented Feb. 15, 1910. Serial No. 413,199.

01'- tion of the valve engaging tool being brdlten away in Fig. 2 which also shows the valve in its seat and also the retracting spring for moving the valve away from its seat when the pressure thereon is released. Fig. :3 is a sectional view taken on line 33, Fig. l omitting the valve engaging tool.. Fig. I is a horizontal sectional View of the lower portion of the head of the valve reseat-ing device showing the rack and pinion for rotating the valve engaging tool. Fig- 5 is an elevation of the valve and its retracting-spring showing also the valve seat in section, the valve being shown as unseated by its retracting spring. Fig. 6 is a detail sectional view taken on line 6-6, Fig. 2. H

In order to demonstrate the practicability of our invention we have shown, a valve 'lcoa'cting with a suitable seat -'-2 and having a stem -3 which is guided in a bearing -4- located some distance. from the valve seat -2, the intermediate portion'of the valve stem being surrounded by collars 5 and 6 and an interposed coil spring T.. The collar 5-- bears against the bearing lwhile the collar -G- which is located some distance from the collar 5 is adj ustably secured to the as to produce the desired tension upon the coil spriug 7- and is held in its adjusted position by means of a. set screw -8, I i E2. The object of this adjustability of the collar 6 is to tension the spring 7- sutliciently to unseat the valve 2- when the axial pressure of its rotating means presently described is relieved so that the valve may be turned to a different position after rotating it back and forth a desired number of times againstits seat, it being understood that a suitable abrasive or polishing material is employed between the valve and its seat to grind the contact surfaces so as to closely litgeach other.

The means for rotating the valve and moving it'axially preferably consists of a rotary tool l0- which is journaled in an supporting frame or casing 11 conta1n1ng a pinion 1:2 and lever 13- which latter toothed rack -l4cmeshing with the pinion 12 so that by applying the tool -l() to the valve -1-- and same axially so as to bring the valve in close engagement with its seat the lever 13 pressing the exterior to the casinlgx positeside of may. be rocked laterally upon its pivot may be rocked back and forth by hand thereby rotating the pinion and tool which is secured to said pinion. .The casing --11 preferably consists of lower and upper sections '-.l 5- and --16- which are detachably-secured together by removable fastening means'as screws .17a-, said sections forming a hollow dust proof casing having through which the lever -13' projects; The uppefs'ection -16- of= the casing is provided with a handle 20- whereby the casing with the tool thereon and valve which is engaged by the tool may-be pressed axially against the ac- "tion of the-spring -7-' and turned about the axis of said tool.. V

The lever -13-- is pivoted at -2lvwithin the casin -11- at one side of the pinion '-+12-- and is provided with a handle and at the opthe pinion w ereby the lever +217 the toothed rack -14lbeing envalve, thus permitting gaged with the same side ofrthepinion as that'to which the handle 22- is secured but is located wholly within the casing, sufficien't clearance being left within the casing at opposite sides of thelever to afford the desired oscillatory movement of saidlever.

As shown in the drawings, the outer face of the valve is pr-ovided'with a slot -2 L while the engaging. end of the tool -10 is made in the form of a screw driver adapted to enter the slot --24.- for rotating the the tool -v-,-1r(i and its supporting means to be readily inserted intothevalve casing and engaged with the valiie-but, it is evident that any other form said valve upon said of tool may be used to conform to the con struction of the valve so long as the valve and its operating tool are provided with coacting members whereby the valve may be actuated and rotated by such tool.

It is evident from the foregoin description that this valve reseating mec anism is made up of comparatively few parts and, therefore, may be manufactured at a small cost and comprises essentially means for rotating and moving the valve axially in one direction, and separate means for unseating the valve when the pressure thereon is re lieved.

What we claim is:

1. In a'valve reseating device, yielding a means normally tending to unseat a. valve, and additional means operated by hand for pressing the valve to its seat against the action of the yielding means, and rotating seat.

2. In a valve reseating device, a spring normally tending to unseat a valve, means for adjustin the'tension of the spring, and additional means including a rack and pinion operated by hand for pressingthe valve to its seat against the action of said spring and for rotating said valve against its seat.

In witness whereof we have hereunto set our hands this 21st day of'January 1908.

GARRETT H. BROWN. HENRY W. BROWN. Witnesses for G. H. Brown:

H. E. CHASE, E. M. McCoRMAoK. Witnesses for Henry W. Brown:

EDWARD H. FREAK, J. 'I. THOMPSON. 

